US6133357A
Expired / Lapsed
US
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Mixtures of thermosets and oxidized polyarylene sulfides
Assignee: Ticona GmbH
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Filing: 1998-03-04
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Granted: 2000-10-17
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Expires: 2018-03-04
Abstract
Abstract Polymer mixtures comprising at least one thermoset and at least one oxidized polyarylene sulfide have particularly good tribological behavior. Oxidized polyarylene sulfides used in these mixtures are polyarylene sulfones or oxidized polyarylene sulfides in which at least 10% of the sulfur bridges have been converted to sulfone bridges. Polyphenylene sulfone is employed with preference. The polymer mixtures are used to produce gearwheels, gear racks, bearings, chains, wheels or gasket materials.
Inventors
- 👤 Helmut Scheckenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:55
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C08; C08J; C08J5/00; C08L; C08L101/00; C08L61/00; C08L61/04; C08L61/06; C08L61/20; C08L61/26; C08L61/28; C08L63/00; C08L67/00; C08L67/06; C08L67/08; C08L83/00; C08L83/04; B; B60; B60R; B60R13/00; C08J2300/00; C08J2300/24; C08L81/00; C08L81/06; C09K2200/00; C09K2200/06; C09K2200/0645; C09K2200/068; C09K2200/0682
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
35 words
A polymeric mixture consisting essentially of at least one thermoset and at least one not melting oxidized or partially oxidized polyarylene sulfide, at least 60% of the sulfur bridges having been converted to sulfone bridges.
Claim 2
Dependent Claim
35 words
A polymeric mixture consisting essentially of at least one thermoset and at least one not melting oxidized or partially oxidized polyarylene sulfide, at least 60% of the sulfur bridges having been converted to sulfone bridges.
Claim 3
Dependent Claim
29 words
The polymer mixture as claimed in claim 1, wherein the thermoset is prepared using alkyd resins, phenolic resins, unsaturated polyester resins, epoxy resins, curable silicone resins, urea-formaldehyde or melamine-formaldehyde.
Claim 4
Dependent Claim
42 words
The polymer mixture as claimed in claim 1, wherein at least one oxidized or partially oxidized polyarylene sulfide is oxidized or partially oxidized polyphenylene sulfide or a polyphenylene sulfone, at least 60% of the sulfur bridges having been converted to sulfone bridges.
Claim 5
Dependent Claim
21 words
The polymer mixture as claimed in claim 1, wherein from 0.1 to 90% by weight of oxidized polyarylene sulfide is present.
Claim 6
Dependent Claim
21 words
The polymer mixture as claimed in claim 1, wherein from 1 to 50% by weight of oxidized polyarylene sulfide is present.
Claim 7
Dependent Claim
88 words
A method of using the polymer mixture as claimed in claim 1 for producing shaped plastic parts, which comprises, mixing said at least one thermoset and said at least one not melting oxidized or partially oxidized polyarylene sulfide, at least 60% of the sulfur bridges having been converted to sulfone bridges optionally with the addition of stabilizers, antistats, flame retardants, dyes, pigments, fillers or lubricants, in a mixer to give a polymer mixture and producing moldings from said polymer mixture by casting, transfer molding or thermoset injection molding.
Claim 8
Dependent Claim
34 words
The method of using the polymer mixture as claimed in claim 6 for producing a shaped plastic part selected from the group consisting of gearwheels, gear racks, bearings, chains, rollers, wheels or gasket materials.
Claim 9
Dependent Claim
45 words
A polymeric mixture consisting essentially of at least one thermoset and at least one not melting oxidized polyarylene sulfide, at least 60% of the sulfur bridges having been converted to sulfone bridges, heat stabilizers, UV stabilizers, antistats, flame retardants, dyes, pigments, inorganic or organic fillers.
Claim 10
Dependent Claim
45 words
A polymeric mixture consisting essentially of at least one thermoset and at least one not melting oxidized polyarylene sulfide, at least 60% of the sulfur bridges having been converted to sulfone bridges, heat stabilizers, UV stabilizers, antistats, flame retardants, dyes, pigments, inorganic or organic fillers.
Claim 11
Dependent Claim
45 words
A polymeric mixture consisting essentially of at least one thermoset and at least one not melting oxidized polyarylene sulfide, at least 60% of the sulfur bridges having been converted to sulfone bridges, a lubricant selected from the group consisting of molybdenum disulfide, graphite or polytetrafluoroethylene.
Claim 12
Dependent Claim
45 words
A polymeric mixture consisting essentially of at least one thermoset and at least one not melting oxidized polyarylene sulfide, at least 60% of the sulfur bridges having been converted to sulfone bridges, a lubricant selected from the group consisting of molybdenum disulfide, graphite or polytetrafluoroethylene.
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CA1270589A
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EP0275991A2
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US5231150A
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EP0801109A2
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-17 | 2004-04-17 | 2004-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-17 | 2008-04-17 | 2008-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-17 | 2012-04-17 | 2012-10-17 | $7700.00 | Window Closed / Lapsed |